Evidence map›Paper›PMID 19863556›Full record

ArticleCellular microbiology2010

Caenorhabditis is a metazoan host for Legionella.

Ann Karen C Brassinga, Jason M Kinchen, Meghan E Cupp, Shandra R Day, Paul S Hoffman, Costi D Sifri

Open access · greenAbstract read
In one paragraph

Article in Cellular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.9field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 66 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Microorganisms · 2023
    Article
  7. Knowledge to Predict Pathogens:Microorganisms · 2022
    Review
  8. Article
  9. Article
  10. Phosphoinositides and the Fate ofFrontiers in immunology · 2020
    Review
  11. Peptidyl-Prolyl-Infection and immunity · 2019
    Article
  12. Review
  13. Review
  14. Frontiers in cellular and infection microbiology · 2018
    Review
  15. Factors Mediating Environmental Biofilm Formation byFrontiers in cellular and infection microbiology · 2018
    Review
  16. Intra-Species and Inter-Kingdom Signaling ofFrontiers in microbiology · 2017
    Review
  17. Global Proteomics RevealedFrontiers in cellular and infection microbiology · 2017
    Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Ann Karen C BrassingaDivision of Infectious Diseases and International Health, Department of Medicine, University of Virginia Health System, Charlottesville, VA 22908, USA.
Jason M Kinchen
Meghan E Cupp
Shandra R Day
Paul S Hoffman
Costi D Sifri
Office of Infectious Diseases · USUniversity of Virginia Health System · US

Funding

INFECTIOUS DISEASES TRAINING PROGRAMT32AI007046 · NIAID · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI Alison K Criss, William A Petri · 1985 to 2026
$15.3M
UVA Digestive Health Research CenterP30DK067629 · NIDDK · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI PIZARRO, THERESA TORRES · 2004 to 2008
$5.6M
Global Biothreats Training ProgramT32AI055432 · NIAID · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI CRISS, ALISON K, PETRI, WILLIAM A · 2003 to 2022
$4.0M
Legionella pneumophila developmental cycle & virulenceR01AI066058 · NIAID · UNIVERSITY OF VIRGINIA · PI HOFFMAN, PAUL STOKES · 2007 to 2011
$1.8M
CIHRHoward Hughes Medical InstituteNIAID NIH HHS R01 AI066058NIAID NIH HHS T32 AI007046NIAID NIH HHS T32 AI055432NIDDK NIH HHS P30 DK067629
6 · The paper itself

Abstract

We investigated whether nematodes contribute to the persistence, differentiation and amplification of Legionella species in soil, an emerging source for Legionnaires' disease. Here we show that Legionella spp. colonize the intestinal tracts of Caenorhabditis nematodes leading to worm death. Susceptibility to Legionella is influenced by innate immune responses governed by the p38 mitogen-activated protein kinase and insulin/insulin growth factor-1 receptor signalling pathways. We also show that L. pneumophila colonizes the intestinal tract of nematodes cultivated in soil. To distinguish between transient infection and persistence, plate-fed and soil-extracted nematodes-fed fluorescent strains of L. pneumophila were analysed. Bacteria replicated within the nematode intestinal tract, did not invade surrounding tissue, and were excreted as differentiated forms that were transmitted to offspring. Interestingly, the ultrastructural features of the differentiated bacterial forms were similar to cyst-like forms observed within protozoa, amoeba and mammalian cell lines. While intestinal colonization of L. pneumophila dotA and icmT mutant strains did not alter the survival rate of nematodes in comparison to wild-type strains, nematodes colonized with the dot/icm mutant strains exhibited significantly increased levels of germline apoptosis. Taken together, these studies show that nematodes may serve as natural hosts for these organisms and thereby contribute to their dissemination in the environment and suggest that the remarkable ability of L. pneumophila to subvert host cell signalling and evade mammalian immune responses evolved through the natural selection associated with cycling between protozoan and metazoan hosts.

Indexed as

AnimalsCaenorhabditisGastrointestinal TractInsulinLegionella pneumophilap38 Mitogen-Activated Protein KinasesReceptor, IGF Type 1Signal TransductionSurvival AnalysisInsulinp38 Mitogen-Activated Protein KinasesReceptor, IGF Type 1

Identifiers

PMID19863556
PMCPMC3120102
OpenAlexW1991948238

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.